code: def test_validate_method_validates_the_transformer():
      class Transformer:
          def fit(self):
              return "fit"
  
          def transform(self):
              return "transform"
  
      transformer = Transformer()
  
      def correct_transformer():
          return transformer
  
      validated_transformer = _validate_user_code_output(
          correct_transformer
      )
      assert transformer == validated_transformer
  
      class InCorrectFitTransformer:
          def pick(self):
              return "pick"
  
          def transform(self):
              return "transform"
  
      in_correct_fit_transformer = InCorrectFitTransformer()
  
      def incorrect__fit_transformer():
          return in_correct_fit_transformer
  
      with pytest.raises(
          MlflowException,
          match="The transformer provided doesn't have a fit method.",
      ):
          validated_transformer = _validate_user_code_output(
              incorrect__fit_transformer
          )
  
      class InCorrectTransformer:
          def pick(self):
              return "pick"
  
          def fit(self):
              return "fit"
  
      inCorrectTransformer = InCorrectTransformer()
  
      def incorrect_transformer():
          return inCorrectTransformer
  
      with pytest.raises(
          MlflowException,
          match="The transformer provided doesn't have a transform method.",
      ):
          validated_transformer = _validate_user_code_output(
              incorrect_transformer
          )
  
file_path: mlflow/tests/recipes/test_transform_step.py
imports: import os
  from pathlib import Path
  from unittest import mock
  import pandas
  import pytest
  import mlflow
  from mlflow import MlflowClient
  from mlflow.environment_variables import MLFLOW_RECIPES_EXECUTION_DIRECTORY
  from mlflow.exceptions import MlflowException
  from mlflow.recipes.steps.transform import TransformStep, _validate_user_code_output
  from mlflow.recipes.utils import _RECIPE_CONFIG_FILE_NAME
  from mlflow.utils.file_utils import read_yaml
label_desc: Use image node_id 6 for calling a global function with example usage: test_validate_method_validates_the_transformer() and returns: transformer, in_correct_fit_transformer, inCorrectTransformer, str, str, str, str, str, str